Charged Reviews
Quick reference
Power Queen 12V 40A DC to DC Battery Charger
Model: P12V40A-DC-Z · SKU: P12V40A-DC-Z
Prepared Nov 12, 2026
Common specifications
| Charger input | DC and solar (MPPT)Source [4] |
|---|---|
| Input voltage | Not documented |
| Solar input voltage | 10 to 30 VSource [4] |
| Solar input limit | 600 WSource [4] |
| Output voltage | Not documented |
| Battery voltage | 12 VSource [1] |
| Charge current | 40 ASource [1] |
| Battery chemistry | STD,GEL,AGM,LFPSource [1] |
| Power | Not documented |
| Isolated | Not documented |
| Engine detection | ACC Wire with the AlternatorSource [4] |
| Weight | |
| Enclosure volume | 5.41 L** Calculated from recorded external dimensions |
| Warranty term | 2 yearsSource [3] |
All recorded specifications
| Battery chemistry | STD,GEL,AGM,LFPDocumented claim ConditionsPrinted in the "Battery Type" row of the Specs table on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Battery Type" row Printed in the "Battery Type" row of the Specs table on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Battery Type" row |
|---|---|
| Battery voltage | 12 VDocumented claim ConditionsPrinted as "System Nominal Voltage： 12V" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "System Nominal Voltage" row Printed as "System Nominal Voltage： 12V" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "System Nominal Voltage" row |
| Charge current | 40 ADocumented claim ConditionsPrinted as "Charging Current： 40A" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Charging Current" row Printed as "Charging Current： 40A" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Charging Current" row |
| Charge voltage | 14.6 VDocumented claim14.6V (Lithium); 14.4V to 14.8V (Lead Acid) ConditionsPrinted as "Charging Voltage Range： 14.6V (Lithium); 14.4V to 14.8V (Lead Acid)" on Power Queen's own product page, captured on September 24, 2026. The lithium figure; the lead-acid range is printed beside it. Location: Product page, Specs table, BASIC section, "Charging Voltage Range" row Printed as "Charging Voltage Range： 14.6V (Lithium); 14.4V to 14.8V (Lead Acid)" on Power Queen's own product page, captured on September 24, 2026. The lithium figure; the lead-acid range is printed beside it. Location: Product page, Specs table, BASIC section, "Charging Voltage Range" row |
| Charger input | DC and solar (MPPT)Documented claim ConditionsPrinted as "Solar Charging Mode" with the value line "MPPT" directly below it (OCR lines), beside "Alternator (/Starter Battery)" input rows; single-model manual. Location: PDF page 14, Specifications (General) Printed as "Solar Charging Mode" with the value line "MPPT" directly below it (OCR lines), beside "Alternator (/Starter Battery)" input rows; single-model manual. Location: PDF page 14, Specifications (General) |
| Dimensions | 214.9 W × 85.1 H × 295.9 L mm8.46 W × 3.35 H × 11.65 L inCalculated11.65 x 8.46 x 3.35 in x 25.4 mm/in, rounded to 0.1 mm ConditionsPrinted as "Size： 11.65 *8.46 * 3.35 in" on Power Queen's own product page, captured on September 24, 2026. Converted from the inches printed, at 1 in = 25.4 mm. Location: Product page, Specs table, DIMENSIONS section, "Size" row Printed as "Size： 11.65 *8.46 * 3.35 in" on Power Queen's own product page, captured on September 24, 2026. Converted from the inches printed, at 1 in = 25.4 mm. Location: Product page, Specs table, DIMENSIONS section, "Size" row |
| Engine detection | ACC Wire with the AlternatorDocumented claim ConditionsPrinted as "Connect the ACC Wire with the Alternator (Optional for Smart Alternator)"; the ACC wire goes to a switching ignition source, needed for smart alternators only. Location: PDF page 12, Installation (ACC wire step) Printed as "Connect the ACC Wire with the Alternator (Optional for Smart Alternator)"; the ACC wire goes to a switching ignition source, needed for smart alternators only. Location: PDF page 12, Installation (ACC wire step) |
| Max efficiency | 90 %Documented claimMax.90% ConditionsPrinted as "Charging Efficiency： Max.90%" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Charging Efficiency" row Printed as "Charging Efficiency： Max.90%" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Charging Efficiency" row |
| Maximum input power | 680 WDocumented claim ConditionsPrinted as "Max. Alternator Input Power： 680W" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Max. Alternator Input Power" row Printed as "Max. Alternator Input Power： 680W" on Power Queen's own product page, captured on September 24, 2026. Location: Product page, Specs table, BASIC section, "Max. Alternator Input Power" row |
| Operating temperature | -10 to 40 °C14 to 104 °F convertedCalculated(14°F - 32) x 5/9 = -10°C; (104°F - 32) x 5/9 = 40°C ConditionsPrinted as "Operating： 14°F to 104°F" in Power Queen 12V 40A DC to DC Battery Charger, Power Queen US product page (September 24, 2026 capture), Product page, Specs table, TEMPERATURE section, "Operating" row. Revised on 1 October 2026: Power Queen's product page prints this figure in another unit for this model, and the stored value is a direct unit conversion of that printed figure. Location: Product page, Specs table, TEMPERATURE section, "Operating" row Printed as "Operating： 14°F to 104°F" in Power Queen 12V 40A DC to DC Battery Charger, Power Queen US product page (September 24, 2026 capture), Product page, Specs table, TEMPERATURE section, "Operating" row. Revised on 1 October 2026: Power Queen's product page prints this figure in another unit for this model, and the stored value is a direct unit conversion of that printed figure. Location: Product page, Specs table, TEMPERATURE section, "Operating" row |
| Solar input limit | 600 WDocumented claim ConditionsPrinted as "Max. Solar Input Power" with the value line "600W" directly below it (OCR lines); single-model manual. Location: PDF page 14, Specifications (General) Printed as "Max. Solar Input Power" with the value line "600W" directly below it (OCR lines); single-model manual. Location: PDF page 14, Specifications (General) |
| Solar input voltage | 10 to 30 VDocumented claim ConditionsPrinted as "Min. Solar Input Voltage" / "10V" and "Max. Solar Input Voltage" / "30V" (label and value on separate OCR lines); single-model manual. Location: PDF page 14, Specifications (General) Printed as "Min. Solar Input Voltage" / "10V" and "Max. Solar Input Voltage" / "30V" (label and value on separate OCR lines); single-model manual. Location: PDF page 14, Specifications (General) |
| Storage temperature | -20 to 70 °C-4 to 158 °F convertedCalculated(-4°F - 32) x 5/9 = -20°C; (158°F - 32) x 5/9 = 70°C ConditionsPrinted as "Storage： -4°F to 158°F" in Power Queen 12V 40A DC to DC Battery Charger, Power Queen US product page (September 24, 2026 capture), Product page, Specs table, TEMPERATURE section, "Storage" row. Revised on 1 October 2026: Power Queen's product page prints this figure in another unit for this model, and the stored value is a direct unit conversion of that printed figure. Location: Product page, Specs table, TEMPERATURE section, "Storage" row Printed as "Storage： -4°F to 158°F" in Power Queen 12V 40A DC to DC Battery Charger, Power Queen US product page (September 24, 2026 capture), Product page, Specs table, TEMPERATURE section, "Storage" row. Revised on 1 October 2026: Power Queen's product page prints this figure in another unit for this model, and the stored value is a direct unit conversion of that printed figure. Location: Product page, Specs table, TEMPERATURE section, "Storage" row |
| Weight | 2.2 kg4.9 lb convertedCalculated4.85 lb x 0.45359237 = 2.2 kg, rounded to 2.2 kg ConditionsPrinted as "Approx. Weight： 4.85 lbs" in Power Queen 12V 40A DC to DC Battery Charger, Power Queen US product page (September 24, 2026 capture), Product page, Specs table, DIMENSIONS section, "Approx. Weight" row. Revised on 1 October 2026: Power Queen's product page prints this figure in another unit for this model, and the stored value is a direct unit conversion of that printed figure. Location: Product page, Specs table, DIMENSIONS section, "Approx. Weight" row Printed as "Approx. Weight： 4.85 lbs" in Power Queen 12V 40A DC to DC Battery Charger, Power Queen US product page (September 24, 2026 capture), Product page, Specs table, DIMENSIONS section, "Approx. Weight" row. Revised on 1 October 2026: Power Queen's product page prints this figure in another unit for this model, and the stored value is a direct unit conversion of that printed figure. Location: Product page, Specs table, DIMENSIONS section, "Approx. Weight" row |
Warranty
| Remedy | Replacement of a defective product after both parties confirm the fault, with a prepaid return label; a refund where the customer insists, in full within 12 months of delivery and pro-rated after 12 monthsDocumented claim ConditionsSummarised from Power Queen's Warranty Policy page captured on September 24, 2026, which prints "Powerqueen will provide a replacement for any defective products." After 12 months the exchange is a priority replacement with a "Like New" battery and a refund is reduced by a monthly depreciation of purchase price divided by total warranty months. Location: Warranty Policy page, "Procedures for Warranty Claims" and "Replacement & Refund Policy" Summarised from Power Queen's Warranty Policy page captured on September 24, 2026, which prints "Powerqueen will provide a replacement for any defective products." After 12 months the exchange is a priority replacement with a "Like New" battery and a refund is reduced by a monthly depreciation of purchase price divided by total warranty months. Location: Warranty Policy page, "Procedures for Warranty Claims" and "Replacement & Refund Policy" |
|---|---|
| Transfer to another owner | Original purchaser only; if gifted or resold, claims are made through the original purchaser with proof of purchaseDocumented claim ConditionsPrinted as "The warranty applies only to the original purchaser. If gifted or resold, warranty claims must be made through the original purchaser with proof of purchase." on Power Queen's Warranty Policy page captured on September 24, 2026. Location: Warranty Policy page, "Warranty Conditions" Printed as "The warranty applies only to the original purchaser. If gifted or resold, warranty claims must be made through the original purchaser with proof of purchase." on Power Queen's Warranty Policy page captured on September 24, 2026. Location: Warranty Policy page, "Warranty Conditions" |
| Coverage conditions | Excludes normal wear and aging (including gradual capacity loss), misuse, abuse, improper installation, unauthorized modification or repair, natural disasters, use outside the intended application (including starter use if not designed for it) and failure to follow the manuals; liability limited to the purchase priceDocumented claim ConditionsSummarised from the exclusions printed on Power Queen's Warranty Policy page captured on September 24, 2026. Gradual capacity loss is excluded, and no capacity-retention or energy-throughput term is published. Location: Warranty Policy page, "Exclusions" and "Limitation of Liability" Summarised from the exclusions printed on Power Queen's Warranty Policy page captured on September 24, 2026. Gradual capacity loss is excluded, and no capacity-retention or energy-throughput term is published. Location: Warranty Policy page, "Exclusions" and "Limitation of Liability" |
| Coverage starts | Original purchase dateDocumented claim ConditionsPrinted as "The warranty period begins on the original purchase date." on Power Queen's Warranty Policy page captured on September 24, 2026. The page adds that a battery replaced or repaired under warranty continues under the original period rather than a new one. Location: Warranty Policy page, "Warranty Conditions" Printed as "The warranty period begins on the original purchase date." on Power Queen's Warranty Policy page captured on September 24, 2026. The page adds that a battery replaced or repaired under warranty continues under the original period rather than a new one. Location: Warranty Policy page, "Warranty Conditions" |
| Warranty term | 2 yearsDocumented claim ConditionsPower Queen's Warranty Policy page, captured on September 24, 2026, gives 2 years for chargers (AC-DC and DC-DC). The term runs from the original purchase date and covers the original purchaser only. Location: Warranty Policy page, Warranty Period table, Accessories Power Queen's Warranty Policy page, captured on September 24, 2026, gives 2 years for chargers (AC-DC and DC-DC). The term runs from the original purchase date and covers the original purchaser only. Location: Warranty Policy page, Warranty Period table, Accessories |
Certificate records
No records documented.
Sources and revisions
- Power Queen 12V 40A DC to DC Battery Charger, Power Queen US product page (September 24, 2026 capture)Official product page · Checked https://ipowerqueen.com/products/power-queen-12v-40a-dc-to-dc-battery-charger
- Power Queen US all-products feed (September 24, 2026 capture)Official product feed · Checked https://ipowerqueen.com/collections/all/products.json?limit=250&page=1
- Power Queen Warranty Policy (September 24, 2026 capture)Official warranty · Checked https://ipowerqueen.com/pages/warranty-policy
- Power Queen 12V 40A DC-DC user manual (PDF, September 24, 2026 capture)Official user manual · Checked https://ipowerqueen.com/cdn/shop/files/12V_40A_DC-DC.pdf?v=1045957857551564742
- Power Queen User Manuals page (September 24, 2026 capture)Official instruction manual · Checked https://ipowerqueen.com/pages/user-manuals